Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 23, 2026 and October 2, 2026.
Aitkin County, Minnesota, has about 16,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Aitkin County is held at the county jail, run by the Aitkin County Sheriff's Office, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, the jail, who books people and common questions.
Related guides: Aitkin County public records, Aitkin County arrest records, Aitkin County warrants, Aitkin County criminal records, Aitkin County court records, Minnesota arrest records and Minnesota inmate search.
Finding Someone in Custody in Aitkin County
A person kept in custody after an arrest in Aitkin County is held at the county jail, run by the Aitkin County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Aitkin County Sheriff's Office at co.aitkin.mn.us/departments/sheriff (page title: Aitkin County Sheriff's Office | Aitkin County, MN), which answered when SearchSystems opened it on September 23, 2026.
That page is the office's jail information page rather than a roster.
The Aitkin County Jail by the Numbers
On an average day in 2021 the jail held about 38 people, down from about 52 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 89 beds, and it ran at 58 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Aitkin County has about 16,000 residents (2024 Census Bureau estimate), so the jail holds about 23 people for every 10,000 residents.
Who Books People Into the Aitkin County Jail
The Aitkin County Sheriff's Office and the agencies that report for Aitkin, Hill City and McGregor make the arrests that end in a booking in Aitkin County.
The largest arrest counts reported to the FBI were the Aitkin County Sheriff's Office's 184 for 2025, Aitkin's 108 for 2025 and Hill City's 9 for 2025.
Together, the four agencies in Aitkin County with all twelve months of 2025 on file reported 301 arrests to the FBI that year. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in Aitkin County arrest records.
Frequently Asked Questions
How do I find an inmate in Aitkin County?
Ask the Aitkin County Sheriff's Office; its jail page SearchSystems verified is at co.aitkin.mn.us/departments/sheriff.
How many people are in the Aitkin County jail?
About 38 on an average day in 2021, the latest year in the Vera Institute's jail data, against a rated capacity of 89 beds.
Is this the official Aitkin County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.